How can I earn more coins?

You can earn coins in the following ways:
- collect profits from flights;
- collect profits from residential and commercial buildings in your Airport and at your neighbour cities;
- redeem friend codes (each friend code gives 100 coins and you can redeem up to 5 codes a day). You can find friend codes on our official page on Facebook: https://www.facebook.com/AirportCity/;
- redeem gift codes published on Facebook (the link above) and on Twitter: https://twitter.com/gi_mobile;
- publish your friend code on Facebook and get a bonus each time your code is redeemed;
- buy coins in the Bank.